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<h1 class="topictitle1">Using Cluster HA</h1>
<div><p>After the cluster HA feature is configured, copies can be stored on the backup storage unit corresponding to the member node. You can also monitor the status of the standby node or the member node on the active node. For example, you can monitor the alarms, performance, and jobs of the member node on the active node, or generate reports by member node.</p>
<div class="section"><h4 class="sectiontitle">Backup</h4><p>After the cluster HA feature is configured, you can specify the target location of backup copies in the SLA during resource backup.</p>
<ul><li>If you select a backup storage unit, copies are stored to the storage unit. If the capacity of the storage unit is insufficient, the backup job will fail.</li><li>If you select a backup storage unit group, the system automatically selects a backup target storage unit based on the storage policy of the storage unit group.</li><li>If you do not specify the backup target location, the system automatically selects a backup target storage unit through intelligent balancing.</li></ul>
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<div class="section"><h4 class="sectiontitle">Replication</h4><p>Two replication modes are supported: <span><strong>Cross-domain</strong></span> and <span><strong>Intra-domain</strong></span>. After the cluster HA feature is configured, you can select a backup storage unit group for intra-domain replication to implement automatic switchover of the target location of replication copies.</p>
<ul><li>Cross-domain replication: Select a replication target cluster. The copy will be replicated from the local cluster to the target cluster.</li><li>Intra-domain replication: Select a storage unit group. When a backup copy is replicated for the first time, the system selects a node from the replication target end as the replication target location. In subsequent replication, the backup storage unit used for the first replication is preferentially selected.</li></ul>
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<div class="section"><h4 class="sectiontitle">Monitoring Alarms of Member Nodes</h4><p>On the <span class="uicontrol"><b>Alarms and Events</b></span> page, select a node and view its alarm information.</p>
<p><span><img src="en-us_image_0000002064077180.png"></span></p>
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<div class="section"><h4 class="sectiontitle">Monitoring the Performance of Member Nodes</h4><p>On the <span class="uicontrol"><b>Performance</b></span> page, select a node and view its performance information.</p>
<p><span><img src="en-us_image_0000002101268193.png"></span></p>
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<div class="section"><h4 class="sectiontitle">Monitoring the Jobs of Member Nodes</h4><p>On the <span class="uicontrol"><b>Jobs</b></span> page, click <span><img src="en-us_image_0000002065160538.png"></span> in the upper right corner of the table, and select <span class="uicontrol"><b>Nodes</b></span> to view the jobs of the active node and member nodes.</p>
<p><span><img src="en-us_image_0000002064354494.png"></span></p>
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<div class="section"><h4 class="sectiontitle">Generating a Report by Member Node</h4><p>On the <span class="uicontrol"><b>Reports</b></span> page, create a global report or create a report by member node.</p>
<p><span><img src="en-us_image_0000002064355562.png"></span></p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="en-us_topic_0000001792345234.html">Cluster High Availability</a></div>
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